Project 1 - Interfacing a 16*2 LCD with Arduino using I2C protocol

#include<Wire.h>
#include<LiquidCrystal.h>
LiquidCrystal lcd(2, 7, 8, 9, 10, 11); // Pins (RS,EN,D4,D5,D6,D7)

void setup()

{
lcd.begin(16,2);
Serial.begin(9600);
Wire.begin();
}

void loop()

{
Wire.requestFrom(8,1);
byte MasterReceive = Wire.read();
int potvalue = analogRead(A0);
byte MasterSend = map(potvalue,0,1023,0,127);

Wire.beginTransmission(8);
Wire.write(MasterSend);
Wire.endTransmission();
lcd.setCursor(0,0);
lcd.print(" Master");
lcd.setCursor(0,1);
lcd.print("SlaveVal:");
lcd.print(MasterReceive);
Serial.println(" From Slave");
Serial.println(MasterReceive);
delay(500);
lcd.clear();

}

#include<Wire.h>
#include<LiquidCrystal.h>
LiquidCrystal lcd(2, 7, 8, 9, 10, 11); //Pins (RS,EN,D4,D5,D6,D7)

byte SlaveReceived = 0;

void setup()

{
lcd.begin(16,2);
Serial.begin(9600);
Wire.begin(8);
Wire.onReceive(receiveEvent);
Wire.onRequest(requestEvent);
}

void loop(void)
{
lcd.setCursor(0,0);
lcd.print("Slave");
lcd.setCursor(0,1);
lcd.print("MasterVal:");
lcd.print(SlaveReceived);
Serial.println("Slave Received From Master:");
Serial.println(SlaveReceived);
delay(500);
lcd.clear();

}

void receiveEvent (int howMany)
{
SlaveReceived = Wire.read();
}

void requestEvent()
{
int potvalue = analogRead(A0);
byte SlaveSend = map(potvalue,0,1023,0,127);
Wire.write(SlaveSend);
}